Simulation of lattice orientation effects on void growth and coalescence by crystal plasticity
Simulation of lattice orientation effects on void growth and coalescence by crystal plasticity作者机构：Department of Plastic Forming Shanghai Jiaotong University Shanghai 200030 China
出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)
年 卷 期：2009年第22卷第1期
页 面：40-50页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by National Natural Science Foundation of China(No.50575143) the Research Fund for the Doctoral Program of Higher Educa-tion (No.20040248005)
主 题：Crystal plasticity Void growth Void coalescence Lattice orientation Bicrystal
摘 要：A three dimensional rate-dependent crystal plasticity model is applied to study the influence of crystal orientation and grain boundary on the void growth and coalescence. The 3D computational model is a unit cell including one sphere void or two sphere voids. The results of three different orientations for single crystal and bicrystals are compared. It is found that crystallographic orientation has noticeable influences on the void growth directionvoid shape, and void coalescence of single crystal. The void growth rate of bicrystals depends on the crystallographic orientations and grain boundary direction.
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